Sources and how we compute the forecast

Forecasts come from Open-Meteo (CC BY 4.0), which aggregates the main global and regional models. For each place we request the best local model and three global models; our consensus is the weighted median of their daily values, and the agreement measures how far apart they are.

Air quality and pollen: Open-Meteo Air Quality (CAMS). Official warnings: MeteoAlarm (EUMETNET, CC BY 4.0). Places: GeoNames (CC BY 4.0).

Times are shown in the local time of each place. Forecasts are refreshed about every hour.